Wouldn't working 6 days a week be the norm for some if not most CFIs at reasonably busy schools, or flying tours in certain places eg.Vegas.
The difference being most will not earn $5000 a month and get 28 days holiday. Well not the ones i have known.
The question could be what experience were they looking for in the job offering that pay, if lowish then some people might be glad of the work.
Chester